Παραπομπή APA

Dennis, N. T. M., & Heppell, T. A. (1968). Vacuum system design. Chapman & Hall.

Παραπομπή Chicago Style

Dennis, N. T. M., και T. A. Heppell. Vacuum System Design. London: Chapman & Hall, 1968.

Παραπομπή MLA

Dennis, N. T. M., και T. A. Heppell. Vacuum System Design. Chapman & Hall, 1968.